Maqola

A phytoreduction route for selective synthesis of highly stable Ag and Ag:AgCl hybrid nanocolloids

Juan LiXinjiang Key Laboratory of Plant Resources and Chemistry of Arid Zone, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urmuqi, P. R. ChinaXuelin TianXinjiang Key Laboratory of Electronic Information Materials and Devices, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urmuqi, P. R. ChinaMaidina HabasiXinjiang Key Laboratory of Plant Resources and Chemistry of Arid Zone, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urmuqi, P. R. ChinaKai ChenHefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, P. R. ChinaKyongjin PangXinjiang Key Laboratory of Plant Resources and Chemistry of Arid Zone, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urmuqi, P. R. ChinaPengfei HuInstrumental Analysis & Research Center, Shanghai University, Shanghai, P. R. ChinaHaji Akber AisaXinjiang Key Laboratory of Plant Resources and Chemistry of Arid Zone, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urmuqi, P. R. China

2012en

ABI

Annotatsiya

Ag and Ag:AgCl hybrid nanocolloids with excellent stability are selectively synthesized using a room-temperature, aqueous-phase and phyto-reduction approach. The extract of Vernonia anthelmintica (L.) wild seed acts as both a reducer and stabilizer. It also provides a slow-release chlorine resource for the formation of AgCl. A small amount of sodium hydroxide switches the products between Ag and Ag:AgCl nanocolloids. The introduction of NaOH can greatly enhance the reducing ability of organic reducing agents derived from the extract, e.g., phenolics, thus giving rise to complete reduction of AgCl into Ag. Meanwhile, phenolics and vernolic acid-derived carboxylate offer highly effective stabilization to the synthesized nanocolloids. Our approach represents a selective and green synthetic route for Ag-based nanomaterials, and the highly stable Ag and Ag:AgCl nanocolloids should have promising applications in various fields, such as biomedicine and sensors.

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Identifikatorlar

DOI: 10.1039/c2ce25364j

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